Locking system



Nov. 8, 1938. E. D. DALL 2,135,967

LOCKING SYSTEM Filed March 19, 1934 5 Sheets-Sheet l as as 4;

ea INVENTOR.

2 cf'axaara/ J Jaf/ ATTORNEY;

Nov. 8, 1938. E. D. DALL 2,135,967

LOCKING SYSTEM Filed March 19, 1934 5 Sheets-Sheet 2 .fi'y, 4

INVENTOR.

d'zMa/a 2677! ATTORNEY? Nov. 8, 1938. E. D. DALL. 2,135,967

LOCKING SYSTEM Filed March 19, 1934 5 Sheets-Sheet 3 f 10/ [gf) a INVENTOR.

ATTORNEY NOV. 8, 1938. 0, BALL 2,135,967

LOCKING SYSTEM Filed March 19, 1934 5 Sheets-Sheet 5 INVENTOR.

ATTORNEYJ:

Patented Nov. 8, 1938 UNITED STATES PATENT OFFICE LOCKING SYSTEM Edward D. Dali, Cleveland, Ohio, asslgnor to Walter F. Wright, Cleveland, Ohio Application March 19, 1934, Serial N0. 716,306

29 Claims. (Cl. 70-264) bodies and the like. While the ensuing descripforth in detail certain mechanism embodying ll tion of my invention will refer to the application the invention, such disclosed means constituting, thereof to a vehicle body having four doors arhowever, but one 01' various mechanical forms in ranged in pairs on opposite sides thereof, it is, which the principle of the invention may be used. nevertheless, to be understood that the principles In said annexed drawings:

of my invention are applicable to coincidentally Fig. 1 is a fragmentary side elevational view of I lock or otherwise secure other doors and like a portion or a vehicle body showing in diagramopenings which may occur in a vehicle body such ma'tic outline two adjacent doors with their asas doors leading to luggage compartments, etc. sociated locking mech n f wh ch m y.

More specifically, my invention relates to the for convenience, be referred to as the master lock;

provision of a coincidental locking system for a Fig. 2 is a view similar to Fig. 1 showing two oth- 15 plurality of doors, in which the actuation of the er doors on a vehicle similar to that illustrated in devices associated with the several doors accom- Fig. 1 but in Fig. 2 the locks associated with both plishes a locking or unlocking oi the same, emdoors are adapted to be actuated by means 10- ploying a train of mechanical elements whereby cated at a remote station such as the master the coincidental looking at a plurality of stadoor referred to in Fig. 1; Fig. 3 is a side elevations may be accomplished mechanically irom tional view of the so-called master lock previousa single station. ly shown in conjunction with the righthand door More specifically, my invention relates to the oi'Fig. 1; Fig. 4 is an elevatlonal view similar to provision of mechanical means for the accom- Fig. 3 but showing the type of lock which has 2 plishment or the foregoing results characterized previously been illustrated on the doors more by simplicity of construction and consequent low particularly shown in Fig. 2; Fig. 5 is a part seccost of manufacture. tional, part side elevational view of a door lock It is the principal object of my invention to adapted to be used in place of the master lock of provide a coincidental locking system of the Fig. 3 in the system illustrated in Figs. 1 and 2;

character describedin which the locking of the Fig. 6 is a part sectional. part side elevational several doors is accomplished by means eflective view of the lock illustrated in Fig. 5 with the to disconnect from the several bolts respectively parts thereof so arranged that it is in the soassociated with the several doors to be locked, called locked position; Fig. 'l is a fragmentary the handles which are normally employed to perspective view of the apparatus positioned in actuate such bolts in order that the doors may be the stile between the two locks illustrated in Fig. opened. 1; Fig. 8 is a fragmentary perspective view oi the It is a further object of my invention to proapparatus located in the stile between the locks vide a coincidental locking system which is eiillustrated in Fig. 2; Fig. 9 is a side elevational fective, even though force may be applied to the view of a slightly different form or master lock handles associated with the several doors when which may be substituted in place of either of 40 in the locked position. The bolts on such doors the locks of Figs. 3 and 5 in the system illuswill then be retained in engagement with the trated in Figs. 1 and 2 or employed in conjuncstile or jarnb adjacent the edge of the door. tion with a system having a dlflerent type of It is a further object of my invention to proremote lock such as is illustrated in Fig. 12; Fig.

vide a coincidental locking system which is ef- 10 is a transversesectional. view of aportion of 45 iective upon actuation to positively arrest the the lock illustrated in Fig. 6 taken on a plane latch bolts on a plurality of doors so that they substantially indicated by the line llllil; Fig. may not be opened from either side and where- 11 is a perspective view of the dog shown in the in the undogging oi the latch bolts on the sevlower leithand corner of Fig. 6; Fig. 12 is a soeral doors in order to open the same may be called remote lock which may be substituted in accomplished only at the central station from place of the remote lock 01' Fig. 4 in the system which the same have been dogged. illustrated in Figs. 1 and 2 or employed in a sim- Other objects oi my invention will appear as ilar system in conjunction with a master lock the description proceeds. such as is illustrated in Fig. 9; Fig. 13 is an end To the a omplishm t f the o g ng and elevations] view of a bolt-actuating handle such This invention relates as indicated to a locking system and pertains more particularly to a system for coincidentally looking a plurality of doors associated with enclosures such as vehicle related ends, said invention, then consists of the means hereinafter fully described and particularly pointed out in the claims; the annexed drawings and the following description setting as may be employed in conjunction with the master lock illustrated in Fig. 9; Fig. 14 is a transverse sectional view partially in elevation of the handle illustrated in Fig. 13 taken on a plane substantially indicated by the line I l-I4; and Fig. 15 is a transverse sectional view of the handle as illustrated in Fig. 14 taken on a plane substantially indicated by the line |5|5.

Referring now more specifically to the drawings and more especially to Figs. 1 and 2, it will be noted that the coincidental locking system here illustrated and constructed in accordance with the principles of my invention is shown associated with four doors l, 2, 3, and 4 which may be the paired doors on opposite sides of a closed vehicle body. As previously indicated, it is to be understood that while the ensuing description of my invention refers to the same as being applied to the four doors of a closed vehicle body, nevertheless, such system is applicable to be used in conjunction with a vehicle body having only two doors and may also be utilized to lock other portions of the vehicle body 'such as the cover for the engine compartment and the cover for a luggage compartment etc.

During the course of the ensuing description the door L which it will be assumed is the righthand front door of the vehicle, will be referred to, for convenience, as the master door, 1. e., the door upon which occurs the station from which the several remaining doors or closures of the vehicle are locked.

Before going on to a detailed description of the system as illustrated in Figs. 1 and 2, it is believed advisable to first describe the construction of the locks which form the component parts of such system.

Referring now, therefore, more particularly to Fig. 3, it will be noted that the so-called master look here illustrated utilizes the usual base plate generally indicated at 5, which is provided with the usual laterally extending flange 6 through which the bolt 1 of the lock projects. The terminal 8 of the bolt 1 is normally maintained in engagement with the stile or jamb of the door by means of a suitable spring such as 3. The usual means will, of course, be provided for maintaining the bolt 1 in freely slidable position in the lock, 1. e., suitable supports for the bolt will be provided, which, however, are so well known to those familiar with the art that for purposes of simplicity of illustration they have not been included in the drawings.

Extending through the plate 3 of the lock is a handle stem shown in cross section at III, which stem may extend, outwardly through the door, a

terminal provided with a hand-grip to facilitate turning of the stem III in the lock. Mounted on the stem I is a roll-back II which, being provided with a square opening for the reception of the stem I0, is turned when the handle is rotated. As most clearly illustrated in Fig. 1, the bolt 1 may have a link |2 connected thereto and to which the crank l 3 from a second handle, usually on the inside of the door, is connected. Ordinarily, therefore, the bolt 1 may, through the apparatus presently to be described, be moved slidably into and out of engagement with the stile or jamb by a rotation of either the outside handle, the stem of which is shown at In, or the iizsige handle, the crank lever of which is shown a Pivotally supported on the bolt 1 by means of a pin II is a hook-shaped link, generally indicated at l5, one and I6 of which is normally in engagement with the roll-back II. The link II is maintained in engagement with the roll-back by means of the spring H which, at one end, is secured to the arm I3 of the link I and at its other end, is secured to a. pin l9.

Pivotally supported on the plate 5 by means of the pin 20 is a lever, generally indicated at 2|, which, at its lower end, as viewed in Fig. 3. is provided with a laterally projecting flange 22 adapted to engage the arm l8 of the keeper IS. The pin I! to which one end of the spring I1 is secured is carried by the lever 2| and such pin may have secured thereto one end of a spring 23 which, at its opposite end, is anchored by means of a pin 24 on the plate 5.

slidably mounted in suitable guideways not shown on the plate 5 is a pin or bar 25 which, at its rear end 26, is provided with a lateral projection directed towards the plate 5 so that the upper end of the arm 2| lying between the pin 25 and the plate 5 may engage such projection 26 when the lever 2| is urged in a clockwise direction under the influence of the spring I].

Pivotally mounted on the plate 5 by means of a pin 23 is an angle-shaped arm generally indicated at 23 and which has a depending leg 30 projecting to a point adjacent the axis of the roll-back The member 29 is provided with a projecting ear 3| which, when the pin 25 is moved to the left into the dotted line position generally indicated at 32, will drop into the recess 33 on the pin 25 and maintain the same in the dotted line position until released in the manner hereinafter more fully explained.

As previously indicated, the lower end of the leg 33 of member 29 extends to a point adjacent the shaft III of the handle. The shaft It! may be of the usual form such as is illustrated in Fig. 19 of my co-pending application Ser. No. 655,180, i. e., the shaft IU of the handle has a transversely extending pin which is moved transversely with respect to such shaft as the key is rotated in the handle. The pin is illustrated at 34 with the lower end of the leg 30 resting thereon in the position normally referred to as the unlocked position. When the key is turned in the handle so that the pin 34 descends permitting the leg 30 to descend likewise under the influence of the spring 35, the ear 3| on such leg may, thereafter, drop into the recess 33 after, of course, the pin 25 has been moved to the left by a counterclockwise rotation of the roll-back ll. Movement of the pin 25 to the left, upon counterclockwise rotation of the roll-back H, is made possible by the upper end of the roll-back engaging a stud 36 carried by the pin 25. The length of the vertically projecting portion of the roll-back H, as well as the relative position of the stud 36 on the bar or pin 25, is such that when the roll-back has been rotated in a counterclockwise direction for a distance suflicient to permit the ear 3| to drop into the recess 33 and hold the pin 25, then the upper end of the roll-back will pass under the stud 33.

The so-called remote lock illustrated in the system shown in Figs. 1 and 2 is shown drawn to an enlarged scale in Fig. 4. The lock illustrated in Fig. 4 includes the usual base plate 31 slidably supporting a bolt 33 which is normally urged to the left and into engagement with the stile or jamb by means of the spring 39. The shaft 43 of the handle associated with this look has a mil-back ll mounted thereon which is substantially circular in form and provided with notches 42 and 43.' Pivotally mounted on the plate 31 by means of a stud 44 is a lever 45. Pivotally mounted on the lever 45 by means of a stud 45 is a second lever 41. The lefthand end of the lever 41 is normally maintained in engagement with the roll-back 4| in the notch 42 by means of a spring 45 which urges the lever 41 for rotation in a counterclockwise direction about the axis of the stud 45. The lower end of the lever 45 is arranged to engage a projection 49 on the bolt 35.

Slidably mounted in suitable guides 50 on the base plate 31 is a pin 5|, at its lefthand end projecting through the laterally extending flange of the base plate and at its righthand end bearing against the vertically disposed leg 52 of the lever 41.

From the foregoing description of the master lock and the lock associated with the remote doors, it will be apparent that when it is sought to rock the several doors on the vehicle, this ma be accomplished by a movement out of the look, i. e., to the left, of the pin 25 associated with the master lock and a movement into the remote locks of the pins 5| associated therewith. The center posts of the automobile body between the doors i and 2 on one side and between the doors 3 and 4 on the other are provided with horizontal slots which receive and pass freely the projecting ends of the pins 25 and 5| so that they do not interfere with the opening and closing of the doors. This construction is similar to that described in my above-mentioned copending application Ser. No. 655.180. The mechanism by which the pins 5| of the remote locks may be forced into the looks as the pin 25 is moved out of the master lock will now be described.

In the stile between doors I and 2 is positioned apparatus clearly illustrated in perspective in Fig. 7.

Mounted on the stile are two pairs 01' angle brackets 53, each pair supporting therebetween a pin 54. Oscillatably supported upon the pins 54 are tablets 55. Slidably supported between the paired angle brackets 53 is a bar 55 which, at its opposite ends, is provided with lateral extensions 51 which engage the tablets 55. Pivotally mounted on the stile by means of a pin 58 is a bel crank 58. One leg 55 of the bellcrank engages the bar 58 at 51 and said bar engages the tablet 55 adjacent the pin 25 and to its other leg 5| such bellcrank has secured a wire or cable 52 by means of a pin 53. The pin 55 may project into a guiding slot 84 therefor formed in the stile post. A sleeve 58. a short portion of which is shown in Fig. '7 may be provided, through which the cable 52 is guided.

The apparatus positioned in the stile post between the two remote locks illustrated in Fig. 2 is most clearly illustrated in perspective in Fig. 8. Two pairs of angle brackets 51 carried by the sti e post, respectively support pins 58 upon which are oscillatably mounted tablets 59. The stile post also carries two oppositely disposed bellcranks 10 and 1|, the lower leg of each respectively engaging one of the tablets 55 and to the other legs of which there are secured the wires 12. The wires 12 are joined to the cable 52 which, it will be noted, is at its opposite end connected to operating mechanism in the stile post between the locks on the other side oi the car. The cable 52 may pass from one side of the car to the other, either upwardly and around in the roof structure, or downwardly and around in the seat structure. As illustrated in Figs. 1

and 2, the wires are shown passing downwardly and around through the seat structure. The means for guiding the cable or wire 52 may either include a plurality of guiding sleeves, such as 56 and 14, or a single continuous guiding tube may be provided for the wire from one stile post to the other.

The operation of the system illustrated in Figs. 1 and 2 may now be briefly described in the light of the foregoing description of the operation of its component parts. The parts as illustrated in Figs. 1 and 2 are in the position which they would occupy when the doors are unlocked.

Assuming now, therefore, that it is desired to lock the four doors of the vehicle, the handle associated with the master lock on door I will first be rotated in a counterclockwise direction as viewed in Fig. 1. Such rotation of the handle will cause a counterclockwise rotation of the roll-back Ii, moving the pin 25 to the left into the dotted-line position illustrated at 32 in Fig. 3. It is assumed, of'course, that the key has first been rotated in the handle of the lock of the master door so as to move the pin 34 downwardly so that after the pin 25 has been moved to the left, the lever 29 may rotate in a counterclockwise direction under the influence of a spring 35 sufficiently to cause the ear 3| carried thereby to move into the recess 38 and maintain the pin 25 in the dotted line position. Movement of the pin 25 towards the left, as viewed in Figs. 1 and 3, will cause a movement to the left of the bar 55, most clearly illustrated in Fig. '7. The movement of the bar 55 to the left will cause a movement to the left of the pin 5| projecting out of the remote lock positioned on door 2. Movement of the pin 5| to the left or into the remote lock on door 2 corresponds to a movement to the right of the pin 5| as illustrated in Fig. 4.

Movement of the pin 5| to the right, as illustrated in Fig. 4, will result in a clockwise rotation ofthe lever 41 into the dotted line position illustrated in Fig. 4. whereupon the lefthand end of such lever will be lifted out of engagement with the roll-back 4i. With the lever 41 lifted out of engagement with the roll-back 4|, then such roll-back and the handle associated therewith may be rotated without a withdrawal of the latch bolt 85.

Movement of the pin 25 of the master door to the left, as illustrated in Fig. 7, results in a clockwise rotation of the bellcrank 39 and a consequent tensioning of the wire or cable 52. Tensioning of the wire or cable 52 will result in a downward movement of the inner ends of the bellcranks 10 and 1|, as illustrated in Fig. 8; such movement will result in a spreading action of the pins 5| of the remote locks extending into the stile post of this side of the car, i. e., the pins on these remote locks will be moved into such looks with a consequent freeing of the roll-backs in the manner described in connection with the explanation of Fig. 4.

Movement of the pin 25 to the left into the dotted line position illustrated at Fig. 3, in the manner above explained. will cause such pin acting through the projection 26 engaging the lever 2| to cause such lever to rotate in a counterclockwise directlon about its supporting pin 2|]. Movement of the lever 2| in a counterclockwise direction causes the lever or link IE to be rotated in a clockwise direction about its supporting pin i4 into the dotted line position illustrated in fig.

3. The member i5 being thus moved into the dotted line position will swing out of the path of the roll-back I I so that the handle on the master door and its associated roll-back may be rotated freely without retracting the bolt 1 on such master door.

The procedure which has been Just explained has resulted in a locking of all of the doors of the car by operably dlsconnectingthe handles from the bolts, i. e., no amount of turning of such handles will result in an actuation of the bolts.

Assuming now that it is desired to unlock the carr-The only thing required to be done is to rotate the key in the handle of the master door so as to move the pin 34 upwardly into the position illustrated in Fig. 3. Such movement will cause a slight clockwise rotation of the lever 29 carrying the ear 3| out of the recess 33 so that the spring l'l and/or 23 may return the pin 25 and the levers l5 and 2| to the full line position illustrated in Fig. 3. When the parts are in this position, a clockwise rotation of the roll-back II, as viewed in Fig. 3, will, due to the engagement therewith of the link l5 which is connected to the bolt I, cause a retracting movement, 1. e., movement to the right of the bolt 1.

As soon as the pin 25 in the master door is returned to its full line position in Fig. 3, the springs 48 associated with the remote locks, return the parts of such locks to the full line position as ilustrated in Fig. 4, i. e., the lever 41 will be returned to engagement with the roll-back 4|, so that when the handle associated with this door is moved in a clockwise direction, as illustrated in Fig. 4, the lever 41 resting in a notch 42 of the roll-back will be moved to the right causing a counterclockwise rotation of the lever 45 about its supporting pin 44. The lower end of the lever 45 is, therefore, urged to the right retracting the bolt 38 associated with the remote look.

When the parts of the remote locks are in the dotted line position, as illustrated in Fig. 4, i. e., when the doors are locked by an operable disconnection of the handle from the bolt, the spring 43a resting in the notch or groove 43 in the rollback will maintain the handle of the door from rotation due to jarring so that when the doors are unlocked in the manner just described, the lefthand end of the lever 41 may drop into proper engagement with the notch 42 in the roll-back 4|.

The above described apparatus is characterized by the fact that the locking of the doors is effected by operable disconnection of the handles from their associated bolts on the several doors. When such apparatus is employed and the car is locked from the outside, it is, of course, possible for an occupant of the locked car to open a door and leave the car by merely rotating the inside handle on one of the doors. For instance, a clockwise rotation of the arm I 3 associated with the inside handle of the lei'thand front door (Fig. 2) will result in a retractive movement of the bolt associated with this door so that the door may be opened. After the occupant has left the car in the manner described, the door may be slammed, whereupon the parts are restored to the locked position and the car again fully locked. Likewise a person within the car may, from a central station, lock all the doors. The crank l3 on the inside handle of door i (Fig. 1) extends upward beyond its connection with the link i2. Mounted on a stud adjacent the upper end of crank i3 is a bellcrank lever 2M with a lower arm engaging said crank l3. Mounted on a stud adjacent the inner end of pin 25 is a bellcrank lever 202 with a. lower arm in contact with the end of said pin. A wire 203 connects the upper arms of said bellcranks. Before entering the car one may turn the key to the locking position, i. e., retract the pin 34 within the shaft Ill, and after entering the car may lock all the doors by movement of the handle on door I (Fig. 1) in a direction, anticlockwise as shown in said drawing. Such rotation will, through the crank iii, the bellcranks 2M and 202 and the wire 203. shift the pin 25 to the left, locking all the doors, just as was done by anti-clockwise rotation of the rollback II and shaft Ill through the outside handle in the explanation hereinbefore given.

It will be noted that when a master lock of the type illustrated in Fig. 3 is employed, the radial projection of that portion of the roll-back required to engage the pin 25 may be so long as to interfere with the complete rotation of the roll-back II when the doors are locked, i. e., when the apparatus illustrated in Fig. 3 is locked, an unauthorized person seeking entry into the car might, by forcing the handle around in either direction, move the radial extension of the roll-back into engagement with the laterally extending flange 8 of the base plate or into engagement with the bolt 1 and if sufilcient pressure were exerted, might cause a. breaking of either the handle or some other part of the mechanism. The master lock illustrated in Figs. 5 and 6 is designed to overcome this dlfllculty, i. e., when the master lock in Figs. 5 and 6 now to be described is locked, the handle may be freely rotated without doing any damage to any part of the mechanism.

The lock illustrated in Fig. 5 includes a baseplate 15 which has slidably supported thereon a bolt I6. A spring 11' urges the bolt into the stile or jam adjacent the lock and normally maintains the door in a latched condition. The shaft of the handle for actuating this lock is illustrated in section at 11. Such shaft carries a transversely movable pin I8 similar, in certain respects, to the pin 20 illustrated as, a part of the handle assembly in Fig. 19 of my co-pending application Ser. No. 655,180. In the construction illustrated in Fig. 5, however, the pin is such that when the key in the handle is rotated to the locked position, such pin 18 will be positioned substantially entirely within the shaft 11, for the reason hereinafter more fully explained. The shaft IT has a roll-back 19 secured thereto. The roll-back 19 is substantially circular in outline with a notched-out portion, generally indicated at 80, in Fig. 6. Slidably mounted on a suitable bracket 8| carried by the plate I5 is a bar 82. The bar 82 is resiliently maintained on its supporting bracket by means of a U-shaped spring 82' which is carried by a stud 82a. The leithand end of such bar is provided with a cam surface 83' adapted to be engaged by the rollback 19 at one end of the notch 80, upon clockwise rotation of the roll-back as viewed in Fig. 5. Positioned adjacent the righthand end of the slidable bar 82 is a vertically disposed arm 83. The upper end 84 of such arm extends into a groove in the bolt I8 so that when such upper end 84 is moved to the right it will carry the bolt 16 along therewith. The lower end of the member 83 carries a pin 85 which extends through and is slidable in an opening 86 in the plate I5. The pin 85 carries a small bracket 81 to which there is secured a spring 88 and the other end of such spring is anchored at 89 on the plate II.

Pivotally supported by means of a pin 9| on the plate 15 is a bellcrank 92. A spring 99 secured at 99 to the bellcrank 92 and at its other end to the plate 15 urges the bellcrank 92 for rotation in a counterclockwise direction. The lefthand end of the bellcrank 92 is arranged to engage a collar 99 mounted on the pin 95.

Slidably supported on the plate 15 by means of brackets such as 91 is a Z-shaped bar 99. The righthand end of such bar 99 carries a stud 99 which projects into a slot I99 formed in one leg of the bellcrank 92. The lefthand leg of the Z- bar 99 extends out of the look as at 25c and this projection corresponds to the pin 25 of the master lock illustrated in Fig. 3.

The Z-bar 99 is at I9I provided with a shoulder adapted to be engaged by a cam member I92. The cam member I92 is supported for rotation by means of a stud I99 carried by the plate 15. The cam member I 92 has a projection generally indicated at I99 which is adapted to be engaged by the roll-back 19 at the righthand end of the notch 99, so that when the roll-back 19 is rotated in a counterclockwise direction from its position, as illustrated in Fig. 5, the cam member I92 will be rotated in a clockwise direction and by engagement with the shoulder I9I, force the Z-bar 99 towards the left.

Pivotally mounted by means of a pin I99 on the plate 15 is a dog I95, the form of which is most clearly illustrated in Fig. 11.

The dog I95 carries a lateral projection I99 adapted to be engaged by the pin 19 of the handle shaft 11. The dog I95 also carries an ear I91 adapted to enter a notch I99 in the Z-bar 99 after such bar has been moved to the left upon counterclockwise rotation. as above described, of the roll-back 19. A spring I99 anchored to the plate 15 by the stud H9 and extending over the pin I99 and engaging the dog I95 under the shoulder III thereof resiliently urges the dog upwardly into engagement with the Z-bar so that when such bar is moved to the left, the projection I91 thereon may move into the notch I99 on the bar.

The operation of the master lock illustrated in Figs. 5 and 6 may be brieflydescribedasfollowsz- The position of the parts, as illustrated in Fig. 5. is the position which they occupy when the door is unlocked, i. e., when rotation of the roll-back 19 is effective to retract the bolt 19 and the position of the parts, as illustrated in Fig. 6, is that which they occupy when the door is locked, i. e., when rotation of the roll-back 19 may occur freely without engagement with any of the parts of the lock and consequently, without a withdrawal of the bolt 19.

When the parts are in the position illustrated in Fig. 5, i. e., the unlocked position, the bolt may be retracted by the rotation in a clockwise direction of the roll-back 19. The roll-back 19, when so rotated, moves the bar 92 to the right against the vertically disposed bar 99. In the unlocked position, the bellcrank 92 is in engagement with the pin 95 upon which the lower end of the vertical bar 93 is mounted. With the bellcrank 92 in the position illustrated in Fig. 5, movement to the right of the bar-92 will cause a clockwise rotation of the bar 99 about the axis of the pin 95. The rotation of the roll-back 19 in a clockwise direction, in order to effect a withdrawal of the latch bolt 19, has no effect on the cam I92 and the mechanism associated therewith for the reason that the bolt is completely retracted before the lefthand end of the notch 99 in the roll-back reaches the upper lefthand end of the cam I92.

Assuming now that it is desired to lock the master door and to coincidently look all of the other doors of the vehicle body associated with the master door: The key in the handle of the lock will first be rotated to move the pin 19 into the shaft 11 of the handle, permitting the dog I95 to be rotated in a clockwise direction under the influence of a spring I99 into engagement with the Z-bar 99. The handle of the lock and consequently the roll-back 19 attached thereto is then rotated in a counterclockwise direction as viewed in Fig. 6. Such counterclockwise rotation of the roll-back will, in the manner previously explained, cause a clockwise rotation of the cam member I92. The cam member I92 bearing against the shoulder IN on the Z-bar will cause such bar to be moved to the left for a distance suflicient to bring the projection I91 on the dog and the notch I99 on the bar into register. The spring I 99 then moves the dog into the notch I 99 and the Z-bar is held in the position illustrated in Fig. 6, i. e., with its terminal 92a projecting out of the lock for a distance greater than when the parts are in the unlocked position, as illustrated in Fig. 5.

Movement of the Z-bar 99 to the left in the manner explained causes a clockwise rotation of the bellcrank 92 about the axis of its supporting pin 9I. Such clockwise rotation of the bellcrank moves the lefthand end thereof out of engagement with the pin 95 or more particularly, the collar 99 mounted thereon.

When the parts have been moved into the position just described, the handle of the lock and the roll-back 19 associated therewith may be rotated in either direction to any extent without retracting the bolt 19 of the master lock or in any way disturbing the setting of the Z-bar 99 which maintains the remote locks in the latched condition. Should the roll-back 19 be rotated in a counterclockwise direction it will merely displace the sar 92 upwardly against the spring 92' but witho t in any way moving the bolt 19 or the bar 99. Should the roll-back 19 be rotated in a clockwise direction, the bar 92 will he moved to the right but since the bellcrank 92 has been disengaged from the pin 95 upon which the lower end of the bolt-actuating bar 93 is mounted, the lower end of such bar 99 will move to the right by a sliding of the pin 99 in the opening 99. The lower end of the bar 99 will move to the right rather than the upper end, due to the fact that the spring 11' urging the bolt 19 to the left, is much stronger than the spring 99 which urges the lower end of the bar 99 to the left.

The roll-back 19, if further rotated in a clockwise direction, will ultimately move the bar 92 to the right for a distance sufllcient to permit the roll-back to be rotated for a complete revolution.

It will be noted that the master lock illustrated in Figs. 5 and 6 is characterized particularly by the provision and arrangement of parts whereby, when the lock is locked, the handle and the rollback associated therewith, may be rotated in either direction without withdrawing the bolt 19 or in any way disturbing the setting of the bar 99 upon which the locking of the remote doors depends. The only thing which remains to be done when it is desired to unlock the car is to rotate the key in the handle moving the pin 19 into engagement with the dog I 95, depressing the same and permitting the springs 99 and 99 to return the parts to the position illustrated in Fig. 5. As soon as the bar 33 is moved to the right, tension on the wire or cable 32 connecting the master lock with the other locks in the series is relieved, thereby permitting the springs 43 associated with the remote locks to restore the parts thereof into an unlocked position.

The locks and the system in which the same are employed, as above described, are all characterized by the fact that the locking oi the several doors is accomplished by disconnecting the several handles from their respective door-latching bolts. When such arrangement is employed, the bolts may, of course, be retracted by an actuation of the inside handle moving the link I2 and the arm I3. It is also possible, oi! course, that in certain types of installation, unauthorized entry of the car may be achieved by the insertion of a thin instrument between the door and its associated Jamb or stile to force back into retracted position the bolt which maintains the door closed. Ordinarily, there is no difllculty on this account, due to the fact that the doors overlie the stile post to a certain extent, thereby obviating the possibility of a retraction of the bolt as just described. In certain types of construction, however, it may be desirable to positively lock or dog the several bolts associated with the several doors, so that when the car is locked the several doors may not be opened except by a proper manipulation of the master lock.

A master lock in which the bolt is so positively dogged as just described is illustrated in Fig. 9 and the handle associated with such lock is shown in Figs. 13 to 15. A remote lock which may be associated with a master lock of the character illustrated in Fig. 9 is shown in Fig. 12.

Referring now more particularly to Fig. 9, it will be noted that the look here shown comprises a base plate II2 upon which there is slidably mounted a bolt structure generally indicated at H3. The bolt structure in this lock is somewhat more expensive than the simple slide bolts variously illustrated in the previously described figures. The bolt structure I I3 includes a pressed steel body II4 to which there is attached a camfaced bolt member I I3 adapted to engage the stile or lamb of the door to maintain the same in closed position. A shouldered rivet II3 carried by the plate H2 and passing through an elongated opening III inthe bolt plate II4 slidably supports the same at its righthand end. The shaft III or the bolt-actuating handle 01' the lock carries a roll-back H3. The roll-back II3 bears against a laterally extending flange I23 on the bolt plate H3 and extends into a notch in a slide bar III. The slide bar I2I is mounted on a stud I22 and is normally maintained in the position illustrated in Fig. 9 by means of a spring I23.

As previously indicated, the form of handle employed in conjunction with the master lock illustrated in Fig. 9 is shown in Figs. 13 to 15. Such handle, generally indicated at I23. comprises the stem portion H3 in the outer body portion I24. The outer body portion I24 and the stem portion III are rigidly connected together and an escutcheon I23 is rotatably mounted on the outer body portion. A coiled spring I23 is mounted between cup members I21 and I2! respectively secured to the handle and bearing against the inner face of the escutcheon. The function of this spring is to resiliently maintain the outer body portion of the handle in snug engagement with the eseutcheon.

The outer body portion or the handle is provided with a key-controlled barrel I23 which, at its inner end, is provided with an eccentric pin I30 which engages a dog I3I slidably mounted in a transverse groove in the handle. As the barrel is rotated by means of the key I32, the dog I3I is moved into a recess I33 in the escutcheon. the escutcheon being secured to the door by some suitable means such as bolts, screws, or the like passing through spaced openings I34 therein. The handle will be held against rotation when the dog is moved Into the recess I33, as illustrated in Fig. 15.

The normal position of the handle when the master door is unlocked is as illustrated in dotted lines in Fig. 13. When the handle is rotated in a clockwise direction from such dotted line position, it will result in a clockwise rotation of the roll-back H3 and a consequent movement to the right of the bolt II3, so that the door may be opened. If, however the handle is rotated in a counterclockwise direction from the dotted line position illustrated in Fig. 13, to the full line position illustrated in such figure, the roll-back H3 likewise rotating in a counterclockwise direction, willkmove the slide I2I to the left, i. e., out or the loc It will be noted that the slide bar I2I corresponds to the members 23 and 23a. of the previously described master locks, so that the master lock illustrated in Fig. 9 may be substituted for either of the previously described master locks in the system illustrated in Figs. 1 and 2.

As previously indicated, it may be desirable to dog the bolts on the several remote doors instead 01 merely ope'rably disconnecting their actuating handles therefrom. A remote lock structure functioning in this manner is illustrated in Fig. 12.

The lock illustrated in Fig. 12 comprises a base plate I33 upon which is slidably mounted a bolt assembly I38, similar in certain respects to the bolt assembly II3 oi the lock illustrated in Fig. 9. A shouldered rivet I31 carried by the plate I33 and passing through an elongated opening I33 in the bolt plate cooperating with flanges I33 on the base plate I33 slidably support the bolt assembly on the base plate. The cam-faced bolt member I43 forming a part of the bolt assembly and passing through an opening provided therefor in a laterally projecting flange I H on the base plate additionally slidably supports the bolt assembly on the base plate. A spring I42 urges the bolt assembly I33 to the left, i. e., tends to maintain the several parts 01. the lock in the position illustrated in Fig. 12.

The shaft I43 of the handle carries a roll-back I44 adapted to engage a flange I43 on the bolt plate so that when the roll-back is rotated in a clockwise direction, the bolt assembly may be moved to the right and the cam-faced bolt member I4l retracted from the stile or jamb.

slidably supported on the base plate by means 01' a pin I43 and a bracket I41 is a bar I43, which corresponds to the members 3| of the previously described remote locks.

Pivotally supported on the base plate I33 by means 0! a stud I43 is a rocker arm I33. A spring I3I anchored at I32 to the base plate and at I33 in engagement with the rocker arm forces such am into engagement with the bar I43 and resiliently urges such bar to the left.

Pivotally mounted on a stud I34 on the base plate is a dog I33. The dog I33 carries a stud I33 which extends into a slot formed on the lower face of the bar I43. The bolt plate carries a pin I51 which extends into the plane defined by the pivotally supported dog iii.

The parts of the lock shown in Fig. 12 are arranged in the position which they occupy when the lock is in unlocked condition. Clockwise rotation of the handle of the lock and the rollback 4 associated therewith results in a retractive movement of the bolt assembly.

Assuming now, however, that the master lock and its associated train of apparatus has been energized to force the bar 8 to the right, i. e., to a locking position: Movement oi the bar I48 to the right will result in a clockwise rotation of the dog I55 about the axis of the stud I54, so that the dog is moved into the dotted line position illustrated in Fig. I2. When the dog occupies the dotted line position illustrated in Fig. l2, it lies in the path of movement of the stud I51, when an attempt is made to retract the bolt, 1. e., move the bolt assembly I36 to the right.

The bolt in the lock illustrated in Fig. 12 is. therefore, positively dogged and may not be retracted except by a breaking of some part of the lock until the bar MB is restored to the full line position illustrated in Fig. 12, thereby permitting the dog I55 to move out of the path of the stud I51.

From the foregoing description it is believed that the construction and operation of the several components of my invention may be fully understood without a further detailed explanation or description.

It should be noted that while several diii'erent forms of master looks, as well as several different forms of remote locks, have been illustrated and described, nevertheless, any particular form of either type lock may be used in the general system illustrated and described along with any other form of described lock in the system.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention:

1. In a coincidental locking system for a plurality or doors, the combination of a latch bolt associated with each of said doors, both actuating means including a handle on each door normally adapted upon rotation of said handle to move its associated bolt, and means functionally responsive to rotation of one of said handles for operatively disconnecting another of said handles from its associated bolt.

2. In a coincidental locking system for a pinrality of doors, the combination of a latch bolt associated with each of said doors, bolt actuating means including a handle on each door normally adapted upon rotation of said handle to move its associated bolt, and means functionally responsive to rotation of one oi. said handles in a direction counter to its bolt retracting movement for operatively disconnecting a plurality of said handles from their associated bolts.

3. In a coincidental locking system for a plurality of doors, the combination of a latch bolt associated with each of such doors, bolt actuating means including a handle on each door normally adapted upon rotation of said handle to move its associated bolt, means functionally responsive to rotation of one of said handles for simultaneously operably disconnecting all of said handles from their associated bolts, and key-controlled means for maintaining said handles in said disconnected relation.

4. In a coincidental locking system for a plurality of doors, the combination of a latch bolt associated with each of such doors, bolt actuating means including a handle on each door normally adapted upon rotation of said handle to move its associated bolt, means functionally responsive to rotation of one of said handles in a direction counter to its bolt retracting movement for simultaneously operably disconnecting all of said handles from their associated bolts, and keycontrolled means for controlling said last named means.

5. In a coincidental locking system for a plurality of doors, the combination of a latch bolt associated with each of said doors, bolt actuating means including a handle on each door, a roll-back connected to each handle and means operably connecting each such roll-back with its associated bolt, and means functionally responsive to rotation of one of said handles and its connected roll-back in a direction counter to normal bolt retracting movement for simultaneously operably disconnecting all of said rollbacks from their associated bolts.

6. In a coincidental locking system for a plurality of doors, the combination of a latch bolt associated with each of said doors, bolt actuating means including a handle on each door, a rollback connected to each handle and means operably connecting each such roll-back with its associated bolt, means functionally responsive to rotation of one of said handles and its connected roll-back in a direction counter to normal bolt retracting movement for simultaneously operably disconnecting all of said roll-backs from their associated bolts, and keycontrolled means for controlling said last named means.

7. In a coincidental locking system for a plurality of doors, the combination of a. latch bolt assembly associated with each oi said doors, bolt actuating means including a handle assembly on each door and a linkage operably connecting said handle assembly with said latch bolt assembly, said linkage secured to one of said assemblies and movable into and out of operable engagement with the other assembly, key-controlled means, and motion transmitting connections between said means and each of said linkages for holding the said linkage on each of said doors out of operative engagement with the said other assembly on the respective doors.

8. In a coincidental locking system for a plurality of doors, the combination of a latch bolt assembly associated with each of said doors, bolt actuating means including a handle assembly on each door and a linkage operably connecting said handle assembly with said latch bolt assembly, said linkage secured to one of said assemblies and movable into and out of operable engagement with the other assembly, means functionally responsive to rotation of one of the handles on said doors for simultaneously moving the said linkage on each of said doors into and out of engagement with the last named assembly on the respective doors, and key-controlled means for controlling said last named means.

9. In a coincidental locking system for a plurality of doors, the combination of a latch bolt assembly associated with each of said doors, bolt actuating means including a handle assembly on each door and a linkage connected to said latch bolt assembly and movable into and out of engagement with said handle assembly whereby operable relation may be established between said assemblies, and means functionally responsive to movement of the handle on one of said doors for simultaneously moving the said linkage on each of said doors into and out of engagement with its associated handle assembly.

10. In a coincidental locking system for a plurality of doors, the combination of a latch bolt associated with each of said doors, inside and outside bolt retracting handles on each of said doors, means operably connecting both handles on each of said doors with the latch bolt thereon, and means functionally responsive to rotation of one of said outside handles for simultaneously operatively disconnecting each of said outside handles from its associated bolt without disturbing the connection between such bolts and their associated inside handles.

11. In a coincidental locking system for a plurality of doors, the combination of a latch bolt associated with each of said doors, bolt actuating means including handle mechanism on each door,

motion transmitting mechanism between each of said handle mechanisms and its associated bolt including separable parts adapted to be coupled and uncoupled and which when uncoupled render said handle mechanism ineflective to actuate said bolt, a slide bar on each door having an operative connection for actuating said separable parts, and means operable from a single station for simultaneously actuating said slide bars.

12. In a coincidental locking system for a plurality of doors, the combination of a latch bolt associated with each 01 said doors, bolt actuating means including handle mechanism on each door, motion transmitting mechanism between each of said handle mechanisms and its associated bolt including separable parts adapted to be coupled and uncoupled and which when uncoupled render said handle mechanism inefiective to actuate said bolt, a slide bar on each door extending to a point adjacent an edge of said door and having an operative connection for actuating said separable parts, motion transmitting mechanism between the slide bars of said doors whereby movement of a slide bar on one door is transmitted to another door, and means on one of said doors for actuating the slide bar thereof.

13. In a door lock, bolt actuating means in cluding a handle mechanism, motion transmitting mechanism between said handle mechanism and said bolt including separable parts adapted to be coupled and uncoupled and which when uncoupled render said handle mechanism inefiective to actuate said bolt, a slide bar extending to a point adjacent an edge of said door and having a connection with said motion transmitting mechanism ior actuating said separable parts by motion applied to said slide bar.

14. In a coincidental locking system for a plurality of doors, the combination of a latch bolt associated with each of said doors, a handle for each bolt, means normally operatively connecting each handle with its associated bolt, whereby each handle is operable to retract its bolt, means ior disabling said last named means and for operatively disconnecting each handle from its associated bolt, a single controller, and motion transmitting connections between said controller and said disabling means and operable in disabling direction by actuation of said controller.

15. In a coincidental locking system for a plu rality or doors, the combination 0! a latch bolt assembly associated with each of said doors, a handle assembly associated with each of said bolts, releasable means operatively connecting each said latch bolt assembly with its associated handle assembly, the parts being so arranged that said handle assembly may completely revolve when released, and means operable from a single station for releasing a plurality of said handle assemblies from operative connection with their associated bolt assemblies.

16. In a coincidental locking system for a plurality of doors, the combination of a latch bolt associated with each of said doors, handle means associated with each of said latch bolts, retracting means for each of said latch bolts having a part pivotally mounted on said latch bolt and normally operatively engaging said handle means, and a train consisting of interconnected movable elements for transmitting motion and operable from a single station for disengaging a plurality oi said parts from their associated handle means.

17. In a coincidental locking system for a plurality of doors, the combination 01' a latch bolt associated with each of said doors, handle means associated with each of said bolts, retracting means for retracting each of said bolts and normally operatively connecting each of said bolts with its associated handle means, and a train consisting oi. interconnected movable elements for transmitting motion and controllable from a single station for operatively disconnecting a plurality oi. said retracting means.

18. In combination with an automobile vehicle having a door, a latch bolt on said door, and means for retracting said latch bolt, means for freeing said retracting means from operative connection with its bolt, said last named means including a part operable through a peripheral edge of said door, and a part engageable with said last named part when said door is closed whereby operation of said part will free said retracting means from operative connection with its bolt.

19. In a coincidental locking system for a pinrality of doors, the combination of a latch bolt associated with each of said doors, bolt actuating means on each door. a post adjacent an edge of each door, means for operably disconnecting each bolt actuating means from its associated bolt including a movable part on the adjacent post, and means operable from a single station operably associated with said movable part for actuating the same.

20. In combination with an automobile vehicle having doors on opposite sides, a latch bolt for securing each of said doors, releasable means associated with at least one of said latch bolts for retracting the same, means for releasing said retracting means from association with said bolt, a train oi movable parts for transmitting motion extending across said vehicle and operatively connected with said last named means, and said train of parts being arranged upon actuation from one side of said vehicle to release said retracting means from association with said bolt on a door on the other side of the vehicle.

21. In combination with an automobile vehicle having doors side by side, a latchv bolt associated with each of said doors, releasable means operatively associated with at least one of said latch bolts for retracting the same, means for releasing said retracting means from operative association with said latch bolt, a train of movable parts for transmitting motion from one door to the other and operatively, connected with said last named means, and said train of parts being arranged upon actuation from one door to release said retracting means from association with said bolt on the other door.

22. In combination with an automobile vehicle having a plurality of doors, a latch bolt associated with each of said doors, releasable means on at least one of said doors associated with the latch bolt thereof for retracting the same, means for releasing said retracting means from association with said bolt, a lever movabiy mounted on another door, and mechanical means responsive to movement 01 said lever for releasing said retracting means from association with said latch bolt on said one door.

23. In combination with an automobile vehicle having a swinging door having a free edge closing against a post of said vehicle, a latch bolt on said door, means for retracting said latch bolt including a roll-back adapted to operatively engage said bolt. means for freeing said rollback from operative connection with its bolt, and said last named means including an operable part in said free edge of said door.

24. In combination with a vehicle body having a plurality of doors, means ior holding said doors in closed position, means operably associated with said holding means for operating the same, said operating means being disconnectable from operable association with said holding means, and means including a train of movable parts for transmitting motion from a point remote from said doors and adapted upon actuation to disconnect said operable means Irom operable association with said holding means.

25. In combination with an automobile vehicle having a door, a latch bolt on said door, means operatively related to said bolt for retracting the same, and means for freeing said retracting means from such operative relation with its bolt. said lastnamed means including a part operably fastened to said door and operable through a peripheral edge of the door, whereby operation of said part will free the retracting means from its operative relation with its bolt.

26. In combination with a vehicle body having a releasable means for holding said door in closed position, control means operatively associated with said holding means for releasing the latter, and means for ireeing said control means from operative connection with said door holding means, said last named means including a part operable through a peripheral edge said door and a part engageable with said last named part when said door is closed.

27. In combination with a vehicle body having a door, means for holding said door in closed position, means operatively associated with said holding means for operating the latter, said operating means being removable from operative association with said holding means, and means for so removing said operating means from operative association with said holding means, said last named means including a train of operatively associated movable parts extending to a point remote from said door and there provided with an actuator.

28. In combination with a vehicle body having a door, means for holding said door closed, means on said door adapted upon movement to release said holding means, and means to prevent the movement 0! said means on said door from releasing said holding means including a train oi operably associated movable parts extending to a point remote from said door and there provided with an actuator.

29. The combination with a vehicle body having a plurality of doors, means for holding at least one of said doors in closed position, means operably associated with said holding means for releasing said door, said operating means being disconnectable from association with said holding means, means adapted upon actuation to disconnect said operable means Irom association with said holding means, said disconnecting means having associated therewith energy storing means for returning the parts to connected relationship, and a train oi operatively connected movable parts extending to a point remote from said door and there provided with an actuator for actuating said energy storing means.

EDWARD D. DALL- Iovenber 8, 1938.

I roman D. BALL.

It is hereby certified that error appears in the printed specification of the above numbered patent requir 12g correction as follows: Page 2, second column, line 10, for the word "keeper" read link; page 5, first column, line 20, for "rock" read lock; .page 5, second column, line 21;, for the reference numeral "52a" read 25a; andtlnt the said Letters Patent diould be read with this correction therein that the same my conform to the record or the case in the Patent Office.

Signed and sealed this 27th day or Decmber, A. "n. 19 8.

(Seal) Henry Van Arsdale Acting Commissioner of Patents.

the other and operatively, connected with said last named means, and said train of parts being arranged upon actuation from one door to release said retracting means from association with said bolt on the other door.

22. In combination with an automobile vehicle having a plurality of doors, a latch bolt associated with each of said doors, releasable means on at least one of said doors associated with the latch bolt thereof for retracting the same, means for releasing said retracting means from association with said bolt, a lever movabiy mounted on another door, and mechanical means responsive to movement 01 said lever for releasing said retracting means from association with said latch bolt on said one door.

23. In combination with an automobile vehicle having a swinging door having a free edge closing against a post of said vehicle, a latch bolt on said door, means for retracting said latch bolt including a roll-back adapted to operatively engage said bolt. means for freeing said rollback from operative connection with its bolt, and said last named means including an operable part in said free edge of said door.

24. In combination with a vehicle body having a plurality of doors, means ior holding said doors in closed position, means operably associated with said holding means for operating the same, said operating means being disconnectable from operable association with said holding means, and means including a train of movable parts for transmitting motion from a point remote from said doors and adapted upon actuation to disconnect said operable means Irom operable association with said holding means.

25. In combination with an automobile vehicle having a door, a latch bolt on said door, means operatively related to said bolt for retracting the same, and means for freeing said retracting means from such operative relation with its bolt. said lastnamed means including a part operably fastened to said door and operable through a peripheral edge of the door, whereby operation of said part will free the retracting means from its operative relation with its bolt.

26. In combination with a vehicle body having a releasable means for holding said door in closed position, control means operatively associated with said holding means for releasing the latter, and means for ireeing said control means from operative connection with said door holding means, said last named means including a part operable through a peripheral edge said door and a part engageable with said last named part when said door is closed.

27. In combination with a vehicle body having a door, means for holding said door in closed position, means operatively associated with said holding means for operating the latter, said operating means being removable from operative association with said holding means, and means for so removing said operating means from operative association with said holding means, said last named means including a train of operatively associated movable parts extending to a point remote from said door and there provided with an actuator.

28. In combination with a vehicle body having a door, means for holding said door closed, means on said door adapted upon movement to release said holding means, and means to prevent the movement 0! said means on said door from releasing said holding means including a train oi operably associated movable parts extending to a point remote from said door and there provided with an actuator.

29. The combination with a vehicle body having a plurality of doors, means for holding at least one of said doors in closed position, means operably associated with said holding means for releasing said door, said operating means being disconnectable from association with said holding means, means adapted upon actuation to disconnect said operable means Irom association with said holding means, said disconnecting means having associated therewith energy storing means for returning the parts to connected relationship, and a train oi operatively connected movable parts extending to a point remote from said door and there provided with an actuator for actuating said energy storing means.

EDWARD D. DALL- Iovenber 8, 1938.

I roman D. BALL.

It is hereby certified that error appears in the printed specification of the above numbered patent requir 12g correction as follows: Page 2, second column, line 10, for the word "keeper" read link; page 5, first column, line 20, for "rock" read lock; .page 5, second column, line 21;, for the reference numeral "52a" read 25a; andtlnt the said Letters Patent diould be read with this correction therein that the same my conform to the record or the case in the Patent Office.

Signed and sealed this 27th day or Decmber, A. "n. 19 8.

(Seal) Henry Van Arsdale Acting Commissioner of Patents. 

